So I finally decided to start going to the gym. Im a 17yo guy. I am 5'11" and weigh around 130 lbs. So yeah, Im pretty skinny.
My friend took me to the gym two times last week, and I really enjoyed it, even though I had no clue what I was doing. Even though my friend helped me a little with what to do, I still wasnt sure what exercises, how many reps, nor how much weight I should be doing. Im pretty sure I over did it because the following days after going to the gym I could not move at all. I know I should be sore after working out but I dont think I should be sore to the point of not being able to bend my leg, but I guess thats just me not used to it.
Now my questions are:
What exercises should I do to start out with? The gym I go to has a lot of machines and free weights.
How many repetitions should I be doing? How many sets?
How much weight should I start out with while doing the exercises? I know I have to increase the weight as I get stronger.
Something else that I was curious about is cardio. I have read that while trying to build muscle you should not do cardio, but I have also heard that running for 15 mins or so to get warmed up before the work out is good, so Im not sure what to do.
Thanks in advance